Late to the thread, but a few points:
My P938 is my EDC, and I always carry it in Condition 1, loaded, cocked and locked. I have a wide variety of guns to choose from, but the P938 hits the right combination of easily concealable size, accuracy, and reliability for me. That said, a couple of observations and a heads-up:
Being able to rack the slide with the safety on is a big plus for me. I like to carry with the magazine full and a round in the chamber. To do so, you must put a loaded mag in the gun, rack the slide, remove the mag, load another round in it, then put it back in the gun. I feel better knowing I can do all that with the safety on.
It was easy for me to gain the muscle memory to operate the safety as the gun is coming out of the holster. As another poster mentioned upthread, the safety comes off automatically as my thumb moves into position on the grip, and goes back on before the gun is holstered. It's an automatic movement for me now, and I don't feel it slows me done one bit. Those who are opposed to the idea haven't trained for it. I have.
I carry the P938 in an Alien Gear IWB holster. Very comfortable, but shortly after getting the holster I discovered a problem. I always double check that the safety is on when I holster the gun and put it inside my waistband. On several occasions, I got back home and unholstered the gun only to find that the safety was disengaged. The first time or two, I thought maybe I had failed to engage the safety before gearing up in the morning. But after the third time, I decided it wasn't me...something else was going on. Upon closer examination, I found that the gun could move forward and back about 1/8" to 3/16" while in the holster. That movement, coupled with the semi-sticky neoprene backing of the Alien Gear holster, was just enough to disengage the safety. (I'm guessing it was happening when I'd sit in my car seat.) I used a heat gun to tweak the fit of the Kydex on the holster, tightening it in such a way as to prevent any fore and aft movement. Since doing that, I've had no "surprise" disengagement of the safety. So as a word of warning, if you are indeed carrying a P938 (or P238 or other similar SA guns), be sure it can't move in the holster in such a way as to allow the safety to become disengaged. Trust me, it's not a good feeling to pull the gun out of the holster at the end of the day only to find it's been in Condition 0 for part of the day. I suspect this issue may be unique to Alien Gear holsters with the neoprene backing. I've also carried a P238 in the past (before the wife stole if from me for her EDC), but I used a leather/Kydex hybrit IWB holster, and I never saw the problem happening with that gun.